Compact atom interferometer integration device

Abstract

The invention discloses a compact atom interferometer integration device which comprises a cold atom interferometer physical system, a cooling optical module, a Raman optical module, a fluorescence detection and collection device and the like. The structure of a single decahedral vacuum glass cavity is utilized, and a collimation beam expander, a magnetic field coil and the like are effectively integrated. According to the decahedral vacuum glass cavity, the defects of induced current, induced magnetic field and the like of a metal vacuum cavity are overcome, the light transmission area is larger, and the size is smaller. The cooling optical module and the Raman optical module are simpler than an existing optical system for realizing atom interference, the optical path structure is simplified, and the optical path cost is reduced. The cube vacuum cavity of the device and peripheral devices are mutually independent, the cooling optical module and the Raman optical module can be independently debugged and then assembled and integrated, and the compact atom interferometer integration device is suitable for glass cavity devices of different structures. The compact atom interferometer integration device can be applied to a high-precision atom inertial sensing technology, and the integration level of the sensor is improved.

Description

technical field [0001] The invention relates to high-precision atomic inertial sensing technology, in particular to a compact cold atom interferometer integrated device, which is suitable for the field of atomic interference precision measurement. [0002] technical background [0003] Atom interferometers are gradually being used in inertial navigation, geological exploration, resource exploration and basic scientific research. Usually, the atomic interferometer system built on the optical platform based on the laboratory is bulky and poor in portability. In order to meet engineering and space applications, it is necessary to develop a miniaturized and transportable atomic interferometer device. [0004] The atomic interferometer device includes a vacuum cavity, a collimated laser module, a detection module, etc. The atomic interference process includes the processes of captive cooling, falling, interference, and detection of atomic groups. In order to meet the conditions o...

AI Technical Summary

Problems solved by technology

At present, most atomic interferometers use a metal vacuum cavity structure, and glass windows are sealed on the metal cavity for light transmission. Due to the need to seal the knife edge and the position of the fixing screw during the sealing process, the conditions for achieving the same light aperture Under the circumstances, the volume and weight of the metal cavity are much larger than that of the glass cavity; the induced current, induced magnetic field and other factors in the metal vacuum cavity will interfere with the atomic interference process, which needs to be avoided as much as possible; the anti-Helmholtz coil And the size of the Helmholtz coil is limited by the size of the vacuum chamber. The glass chamber can effectively reduce the size of the vacuum sealing part, reduce the volume of the vacuum chamber, and reduce the anti-Helmholtz through reasonable design. Coils and Helmholtz coils, so there is still room for improvement to meet the demand for miniaturized atom interferometers in practical applications

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